recv_loop and do_recv: ensure we don't do length(Data) on something that is not a list().
recv_loop and do_recv: ensure we don't do length(Data) on something that is
not a list().


git-svn-id: 3f662d0c7823f96a484d6a9a7c90f2d7866b6747@631 e454d3dc-12ff-0310-9b8b-94264392205f

bernardd/yxa,bernardd/yxa,bernardd/yxa,bernardd/yxa